13180920 has 32 divisors (see below), whose sum is σ = 39543120. Its totient is φ = 3514880.

The previous prime is 13180901. The next prime is 13180931. The reversal of 13180920 is 2908131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54801 + ... + 55040.

Almost surely, 2^13180920 is an apocalyptic number.

13180920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13180920 is an abundant number, since it is smaller than the sum of its proper divisors (26362200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13180920 is a wasteful number, since it uses less digits than its factorization.

13180920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109855 (or 109851 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 13180920 is about 3630.5536767826. The cubic root of 13180920 is about 236.2192255763.

The spelling of 13180920 in words is "thirteen million, one hundred eighty thousand, nine hundred twenty".